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I am a Robotics Hobbyist. I always wanted to have a PCB Milling Machine, but commercially available ones are pretty expensive. And I don't have a great deal of knowledge to build one myself.
If you guys can provide links of where I can start for a DIY Machine. I mean...
I am working on robotics, with little knowledge on physics. I tend to use mostly thumb rules and trial and error methods to solve problems. Now I have at hand a project to build balancing robot, with servos and PIC controller. I have planned to start the project after I dig to...
Hello to everyone,
I need a circuit that generates VGA output test patterns to test Computer monitors. It should be able to generate 640x480, 800x600, 1024x768 modes with different scan rates. I got a circuit from net that uses MAX CPLD from Altera, but its pof file is missing...
Re: final project ideas
Here are some valuable tips.
Don't get too ambitious in selecting a project. Select one which is practical & achievable within deadline. Don't try to get only software or hardware only involved as a combination of both will really make an impact in future interviews...
making pcb vias at home
i know that pcb making topic is dicussed over and over again, but I want information about instruments that will enable one to make double sided pcbs with professional qualities. pth is must and i want to know how it can be done at home reliable, may be using...
Well I am in final BE semester too. Just completing my project that was related to Displays.
But let me tell you one thing from my experience in robotics that you should use DC servomotors from Hitec and PIC controllers. Two reasons for that are servos require only one PWM signal for precise...
Well its quiet easy
firstly convert a JK FF CD4047 to toggle mode by shorting J K inputs to Vcc, D FF can be in toggle mode by shorting Q Bar output to D input. For a decade counter you will need 4 toggle FF JK or D.
LSB FF will be given direct clock. Second most LSB FF will have clock i,e...
Re: Help Me
From transformer secondary (15-0-15) construct a bridge rectifier between two secondary o/p(not CT). Now since a bridge rectifier is in itself a double CT rectifier, use one cathode junction tie a capacitor and 7812 wrt CT for +12v.
With other two...
Parallel Port has an 8-bit o/p port, 5-bit i/p port, & 4-bit control bidirectional port, with different addresses. You can use them as your requirement and for analog o/p you can connect DAC at o/p.
well minimum refreshing rate of a group of leds (rows/columns) should be atleast 50Hz. on time of column/row depends on no. of columns/rows.
for column by column multiplexing,
for 60 columns
each should have 50hz
so total period =20ms
on time of a column=20ms/60=333us
since each column has...
Re: seven segment
Firstly you will need alphanumeric displays having 14 segments.
to display computer you will need 8 such displays each showing a letter.
then for each character display, find out which segements are required to be turned on.
hardwire all segments (on) with each...